Systems and methods for network failover in digital substations

1. A method for failover network, the method comprising: providing at least one process interface unit (PIU); providing at least one intelligent electronic device (IED) being communicatively coupled to the at least one PIU; providing an Ethernet network configured to transmit data between the at least one PIU and the at least one IED; receiving, by the at least one IED from the at least one PIU, in parallel: a pre-configured data stream via a point-to-point connection between the at least one PIU and the at least one IED; and one or more other data streams via the Ethernet network; determining, by the at least one IED, that at least one of failure conditions is satisfied, the failure conditions including: at least one frame in the pre-configured data stream is lost or delayed; a quality of the data in the at least one frame in the pre-configured data stream is below a first threshold; a period of a time associated with the data in the at least one frame in the pre-configured data stream is below a second threshold; and a health indicator associated with one of a behavior and an operation mode of the at least one PIU is below a third threshold; responsive to the determination that at least one of the failure conditions is satisfied, identifying, by the at least one IED, at least one redundant frame in the one or more other data streams; determining, by the at least one IED, that the quality of the data in the at least one redundant frame is above the first threshold and the period of the time in the at least one redundant frame is above the second threshold; and based on the determination that the quality of the data is above the first threshold and the period of the time is above the second threshold being positive, processing, by the at least one IED, the at least one redundant frame, wherein the processing includes at least transforming the data, wherein one or more secondary sampled values associated with the at least one redundant frame are used to replace one or more respective primary sampled values associated with the at least one frame in the pre-configured data stream.

2. The method of claim 1 , further comprising: Based on the determination that the quality of the data is above the first threshold and the period of the time is above the second threshold being negative, determining, by the at least one IED, a number of the at least one frame in the pre-configured data stream for which the failure conditions are satisfied; If the number is below a tolerance threshold, labeling, by the at least one IED, the at least one frame as having a poor quality and sending the at least one frame for further processing; and If the number is above the tolerance threshold, issuing, by the at least one IED, at least one alarm.

3. The method of claim 1 , further comprising determining, by the at least one IED, based on predetermined criteria, whether data available in the pre-configured data stream is a good quality.

4. The method of claim 1 , wherein the at least one PIU includes at least one pre-configured communication port defined by one of a factory setting or a product code order.

5. The method of claim 1 , wherein at least one of the pre-configured data stream and the one or more other data streams includes at least one dataset, the at least one dataset including at least one field for a unique identifier (UID).

6. The method of claim 5 , further comprising mapping, by at least one IED, the at least one dataset to a user-defined source based on the UID.

7. The method of claim 6 , further comprising transforming, by the at least one IED, the at least one dataset based on user-defined transformation factors to avoid configuration by the at least one PIU.

8. The method of claim 5 , wherein the at least one dataset includes a Generic Object Oriented Substation Event.

9. The method of claim 5 , wherein the at least one dataset includes sampled values, the sampled values including at least one of a current output directly measured from a current transformer and a voltage output directly measured from a voltage transformer.

10. A system for network failover, the system comprising: one or more electrical substation components including at least one current transformer (CT) and at least one voltage transformer (VT); at least one process interface unit (PIU) wired to the at least one CT and the at least one VT, wherein the at least one PIU includes at least one pre-configured communication port defined by one of a factory setting and a product code order, the at least one PIU operable to transmit and receive a data stream, the data stream including at least one dataset defined using a pre-configured IED Instantiated Description (IID) file, the at least one dataset including at least one field for: sampled values measured from one of the at least one CT and the at least one VT; a Generic Object Oriented Substation Event (GOOSE), the GOOSE including at least one of a status and an analog information directly measured for at least one of process transducers including at least one switchgear; a unique identifier (UID) pre-configured by one of the factory setting or the product order code; at least one intelligent electronic device (IED) being communicatively coupled to the at least one PIU; and an Ethernet network configured to transmit data between the at least one PIU and the at least one IED; wherein the at least one IED is operable to receive from the at least one PIU in parallel: a pre-configured data stream via a point-to-point connection between the at least one PIU and the at least one IED; and one or more other data streams via the Ethernet network; and wherein the at least one IED is further operable to: determine that at least one of failure conditions is satisfied, the failure conditions including: at least one frame in the pre-configured data stream is lost or delayed; a quality of the data in the at least one frame in the pre-configured data stream is below a first threshold; a period of a time associated with the data in the at least one frame in the pre-configured data stream is below a second threshold; and a health indicator associated with one of a behavior and an operation mode of the at least one PIU is below a third threshold; responsive to the determination that at least one of the failure conditions is satisfied, identify at least one redundant frame in the one or more other data streams; determine that the quality of the data in the at least one redundant frame is above the first threshold and the period of the time in the at least one redundant frame is above the second threshold; based on the determination that the quality of the data is above the first threshold and the period of the time is above the second threshold being positive, use the at least one redundant frame for processing, the processing including at least transforming the data; based on the determination that the quality of the data is above the first threshold and the period of time is above the second threshold being negative, determine a number of the at least one frame in the pre-configured data stream for which the failure conditions are satisfied; if the number is below a tolerance threshold, label the at least one frame as having a poor quality and send the at least one frame for further processing, wherein one or more secondary sampled values associated with the at least one redundant frame are used to replace one or more respective primary sampled values associated with the at least one frame in the pre-configured data stream; if the number is above the tolerance threshold, issue at least one alarm; and determine, based on predetermined criteria, whether the pre-configured data stream is a good quality.